/*
 * Copyright 2017 Tony.lau All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.igeeksky.xcache.util;

import java.util.Arrays;

/**
 * @author Tony.Lau
 * @blog: https://my.oschina.net/xcafe
 * @createTime 2017-03-01 05:09:16
 */
public class BytesUtils {
	
	public static final byte[] EMPTY_BYTES = new byte[0];
	
	public static final byte[] ONE_BYTES = new byte[]{1};
	
	public static boolean isEmpty(byte[] bytes){
		return (null == bytes || bytes.length == 0) ? true : false;  
	}
	
	public static byte[] merge(byte[] src1, byte[] src2){
		if(null==src1 || src1.length==0) return src2;
		if(null==src2 || src2.length==0) return src1;
		
		int alen = src1.length;
		int blen = src2.length;
		byte[] dest = Arrays.copyOf(src1, alen+blen);
		System.arraycopy(src2, 0, dest, alen, blen);
		return dest;
	}

	private BytesUtils(){}
}
